@charset "utf-8";

.mid {
	height: 180vh;
	width: 100vw;
	display: flex;
	flex-direction: column;
}

.headimg {
	top: 0px;
	height: 250px;
	width: 100%;
	/*background-image: url("../image/headimg2.jpg");*/
	background-color: #d3e2ea;
	background-size: 1540px;
	background-repeat: no-repeat;
	background-position-y: -190px;
	background-position-x: -150px;
	overflow: hidden;
	border-bottom: 5px solid rgb(58, 83, 85);
	animation: headload 0.9s linear;
}

.headimg h1 {
	color: rgb(6, 52, 94);
	font-size: 5em;
	text-align: center;
	line-height: 200px;
}

.mid .ab {
	width: 800px;
	height: 300px;
	box-shadow: 0 0 15px rgb(98, 187, 224);
	background: rgba(27, 177, 253, 0.2);
	border-radius: 15px;
	backdrop-filter: blur(5px);
	display: flex;
	overflow: hidden;
	margin-top: 40px;
}

.a1 .img {
	background-image: url("../image/about1.jpg");
}

.a2 .img {
	background-image: url("../image/about2.jpg");
}

.a3 .img {
	background-image: url("../image/about3.jpg");
}

.ab p {
	word-wrap: break-word;
	color: rgb(255, 255, 255);
	line-height: 24px;
}

.ab .txt {
	width: 450px;
	margin: 0 50px 0 50px;
}

.ab h2 {
	text-align: center;
	color: rgb(254, 254, 255);
}

.ab .img {
	width: 300px;
	height: 100%;
	background-size: cover;
	background-position: center;
	filter: grayscale(0.3);
	opacity: 0.8;
	transition: all 0.5s ease 0s;
}

.ab .img:hover {
	transform: scale(1.1);
}

.ab .imghid {
	overflow: hidden;
}

.a1 {
	margin-left: 40%;
	animation: a1load 2.5s linear;
	transition: 0.5s 1s;
}

.a2 {
	margin-left: 10%;
	animation: a2load 3.6s linear;
	transition: 0.5s;
}

.a3 {
	margin-left: 40%;
	animation: a3load 4.8s linear;
	transition: 0.5s;
}

.a3 h2 {
	margin-top: 100px;
	line-height: 50px;
}

@keyframes a1load {
	0% {
		opacity: 0;
	}

	70% {
		opacity: 0;
		margin-top: 100px;
	}

	100% {
		opacity: 1;
		margin-top: 40px;
	}
}

@keyframes a2load {
	0% {

		opacity: 0;
	}

	80% {
		opacity: 0;
		margin-top: 100px;
	}

	100% {
		opacity: 1;
	}
}

@keyframes a3load {
	0% {

		opacity: 0;
	}

	90% {
		opacity: 0;
		margin-top: 100px;
	}

	100% {
		opacity: 1;
	}
}

@keyframes headload {
	0% {
		height: 0px;
	}

	100% {
		height: 240px;
	}
}
